Hi gomi.ryota ,
14.3K is not too far from the recommended range, it will work just fine. The recommendation of 1K to 10K is not a hard requirement, you just need nee to be aware that t oo small FB resistance will increase the power loss and decrease the device…
Part Number: TPS54A20 Hi, TI expert.
The recommended output inductor is 220 to 350nH, but what happens if you use an inductor other than this recommended value? For example, what kind of behavior would you expect if you put in a 110nH inductor?
Best…
Part Number: TPS54A20 Hello TI Expert,
I have a question about SCAP and AB phase drivers.
1. I would like to know how the SCAP charges 1/2 of Vin.
2. Do you agree that VGA and VG open the gate at 5V? Is it correct that VGA requires 5+VSCAP?
3. Is it…
Part Number: TPS54A20 Hi, TI expert
"8.2.2.10 Gate Drive Capacitor Selection" says to add a 1uF capacitor, but do I have to consider derating due to DC bias, etc.? Considering the DC bias, the EVM is 0.33uF. On the other hand, the capacitor…
Part Number: TPS54A20 Hi TI Experts,
I have 3 questions about the Efficiency around the VG pin of the TPS54A20.
1. It says that applying 5V to the VG+ pin turns off the internal LDO, which improves efficiency, but what is the loss of this LDO?
2. If…
Part Number: TPS54A20 Hi, TI expert.
I would like to know how to connect AGND and PGND.
The GND is separate for analog and for high current, but in the end they are connected.
Therefore, I would like to ask you to tell me where it is recommended to…
Part Number: TPS54A20 Hi, TI expert.
There are 7 points that I would like to ask you to teach, such as the tolerance of the SS/FSEL comparator and the use of SCAP.
1. When running with RSS/FSEL 21.5kΩ, what is the SS/FSEL value? Should it be within…
Part Number: TPS54A20 Hi, TI expert.
The rated power of all the resistors used in the evaluation board (TPS54A20-EVM770) is unified to 0.1W, but there is no point where the rated power is so necessary, right?
I don't think so, but please let me know if…
Part Number: TPS54A20 Hi, TI expert
How many variables have you substituted for each of the inductor equations (4)?
K(IND) ＝ 0.4 , Vout = ?, Vin = ?, Iout = ?, Fsw = ?
Best regards.
Part Number: TPS54A20 Hi, TI expert
I want to know about Efficiency when driven at frequencies other than 4MHz.
The EVM is fitted to 4MHz and the efficiency is 62%, but what happens to the efficiency when fitting to 7MHz and 10MHz and operating at each…